Handheld vacuum pump unit



FIG. 1 is a perspective view of the handheld vacuum pump unit, showing an embodiment of the present design;

FIG. 2 is a bottom plan view of the embodiment of the present design illustrated in FIG. 1;

FIG. 3 is a top plan view of the embodiment of the present design illustrated in FIG. 1;

FIG. 4 is a right elevation view of the embodiment of the present design illustrated in FIG. 1;

FIG. 5 is a left elevation view of the embodiment of the present design illustrated in FIG. 1;

FIG. 6 is a front elevation view of the embodiment of the present design illustrated in FIG. 1; and,

FIG. 7 is a rear elevation view of the embodiment of the present design illustrated in FIG. 1. 

The ornamental design for a handheld vacuum pump unit, as shown and described. 